Alarm for incubators.



J. F. POORE.

ALARM FOR INCUBATORS.

APPLICATION FILED AUG-31.1915.

Patented Nov. 21, 1916.

2 SHEETS-SHEET I.

2/ wag 3 J. F. POORE.

ALARM FOR INCUBATORS.

APPLICATION FILED AUG-31, I915 1,205,929. Patented Nov. 21, 1916.

2 SHEETS-SHEET 2.

JOHN F. POORE, OF l/VACO, TEXAS.

ALABTvI FOB INCUBATOBS.

Application filed August 31, 1915.

To all whom it may concern:

Be it known that LJOHN F. Poona, a citizen of the United States, residing at l faco, in the county of McLennan and State of Texas, have invented certain new and useful Improvements in Alarms for Incubatorsg, and I do hereby declare the following to be a full, clear, and exact description or the invention, such as will enable others skilled in the art to which it appertains to make and use the sanie.

This invention relates to alarm attachments for incubators, and the primary object of the invention is to pro 'ide an electrically operated alarm, which is automatically operated upon the raising or lowering of the temperature within the incubator, for sounding an alarm.

Another object of this invention is to provide an electrical alarm mechanism which is carried by the incubator exteriorly thereof, by means of which access may be readily gained to the signaling mechanism for throwing it out of an operative position.

Another obj ct of this invention is to provide an electrical signaling mechanism for attachment to incubators, which includes a switch contact operated by the raising or lowering otthe temperature within the incubator, for closing a circuit between a pair of adjustable contacts and a signaling 2'I1(.l121ll18111,.{111(l to adjustably support the circuit closing contacts for regulating the sounding of the signal at any desired'thcrinal degree of heat within the incubator.

lVith the foregoing and other objects in view this invention consists in sucn novel. features of construction, combination and arrangement of parts as will be hereinafter more tully described, illustrated in the accompanying drawings and claimed.

Tn describing the invention in detail ref erence will be had to the accompanying drawings wherein like characters designate like or (an-responding parts throughout the several views, and in which l igure 1 is a side elevation of an incubator, showing the improved signaling mechanism attached thereto Fig. 2 is a top plan view of a fragment of an incubator and the improved signaling attachment, Fig. 3 is an enlarged fragmentary end view 'of the signaling mechanism, Fig. 4 is an edge view of the adjustable contact, Fig. 5 is a side elevation of the ad ustable contact, showing various ad ustments th'ereot'in dot- Specification of Letters Patent.

Serial No. ZT8326.

ted lines, Fig. 6 is a detail perspective view of one of the adjustable contacts, and Fig. 7 is a detail perspective view of the other adjustable contact.

Referring more particularly to the drawings, 1 designates an incubator of any ordinary construction, which has a heater 2 secured to one end thereof, for the purpose of maintaining the desired temperature within the incubator for insuring the hatching of eggs, The hea er 2 has communication with the interior of. the incubator through a transversely extendin pipe 8, which communicates with a vertical pipe 4,

extending upwardly from the burner 5 of the heater.

The damper 6 is positioned upon the upper open end of the vertical tube and it has a wire 7 connected thereto, which extends upwardly and has its upper end connected to an arm 8. The arm 8 is secured to the side of the incubator l in any suitable manner, as is indicated at 9 in Fig. 1 of the drawings. The wire 7 is connected to a bar 10, which bar is pivotally connected intermediate of its ehds to the arm 8. The wire 7 is connected to one'end oi the bar 10, and a weight 11 is mounted upon the other end of the bar, to counterbalance the weight of the damper 6. The wire 7 extends .upwardly through an eye 12, which is secured to the damper lever 13. The damper lever 13 is pivotally carried by a bracket 14,

which is secured to the incubator 1, and it has balancing weights 1.5 and 16 mounted upon its ends. The damper arm or rod 13 is a thermostat which moves in response to changes in temperature of the airsurrounding it. The damper lever 13 has an arm 18 secured thereto as is shown at 19 to whicharm is connected an electrical conductor 19. The electrical conductor 19 is connected to a binding post 20, carried by the incubator 1, which binding post is also connected to one pole of a battery or series of batteries indicated at 21 in the draw ings. v

The arm 18 is constructed of electrical conducting material, and it extends transversely across the end of the incubator, having its outer end positioned intermediate electrical contacts 22 and 21 The contacts and 23 are pivotally carried by arms 2+ and 25 respectively. The arms 24 and 25 are detachably connected to a bar 26 by means of screws 27 and 28, so that the position of the trical conducting T rods 24: and with respec may he vurie by 1 screws, The bar :26 is pivotto a bracket 29 which bracket tached to the incul are positioned in the path of of the arm 18, so that when I it Wlll engage the contact 22, and when it lowers, beyond normal position it will and 1 contacts are moved manuall upon thei pivotal points, for cutting oil 2 ci en t through either one of the contacts and tie arm 18. The contacts and 23 are connected to a binding post by means of an electrical conducting Wire 33 which ire connected to the arm 28. The arm end the rods 24 and are formed oi conducting material, so as to permit of the pesmge of an electrical current theiethrough. The bi ing post 3% is connected to an electrical i naling mechanism 31 1;" means of an o vll'tl 3T. The o pole of the electrical sin railing n'ierhnnissin 36 is connected to one pole of the battery n oppositely of the pole to which the binding post 20 connected so that when the arm 18 engages either of the contacts 22 or L l, a circuit Will be closed through the arm 18, either of the contacts, the signaling mechanism 36, and the ifilttdl'y 21, for souruling an alarm. The contacts and 23 are substantially ll-shaped, having le' 4-0 and which 2 re connected by a plate 2, forming; socket for receiving the ends of the i-F The Wire '4' is slidably mounted u'l eye 12, and it has a stop 23 formed th re upon, for limiting the slidahle illi'lifllelli of the wire within t and tor (1 using the rod 13 to more synchronouey with the wirand the damper (3 after the damper ha moved apredetermined oistance u; wardly.

In the ope 'ation of the improved l in'g or alarm mechanism for attarhn'iont to inciihatore the rod or urin 13 heir e thermostat moves in response to cnan e' in temperature of the air su rounding it, which tempe 'iiture is dependent upon a circulation current of heated air which passes out of the incubator 1 through the tube 2, upwardly through the lamp 4- and into the inculmtor again through the tube 3. The movement of the arm 13 will corresponlingly lower the damper (S the ten perzlture about the arm is high or low and th. is airy the activity of the heating element In case the r G insufiicient in ii certain f to attractihe c acts d, for cone 5 cont any desired therof the rods 2% c heat or temthe incubator Will wardly, and also the 'jinosta'ticzillv controlledrod 13, which will more 18 up filly. When the :hes :1 certain thermal dend of th arm. 18 Willemed end of the nit through mechanism i mg a inn the 7 1 1 between rei gnahng r iechanism ct upon its piv the rod 2% te c; rried s is shown in break the of the signal- 2 he then he ithe teinperatur i i reb tile da'nper 6, lownwardly, movngigement With he l loose mounting of angled end of the rod of the extension 30 contacts will automatithe position indicated in Fig. w

rally fall int 1 of the or ill other Words autoopehzitivc position rm 1 5. VJhen the incubator reaches a trnial degree the end contact :23, or closing a. ciract and the c an 7 mechanism, will sound an elude for ecquzainting a pe'zsou oi the fact that the temperature no in the incubator too low. The circuit 1 "nalin permit into en T the exnormal meter, "the arm et-Ween the conshown in Fig, .1

ension V i Com an d the advantages otconstiuction andcf the gether with various features of construction,

it is. to be understood that certain minor featuresof construction, combination andarrangement of parts may be altered to suit practical conditions provided such alterations arecomprehended within the scope of What is claimed.

What is claimed is 1 1. In a circuit make and break mechanism, a thermostatically controlled electrical conductive arm, a pair of arms, contacts pivotally carried by said arms and normally held Within an operative position for en-. gagement with said thermostatically con trolled arm, and insulating; plates carried by said contacts.

2. In a circuit make and break mechanism, a thermostatically controlled electrical conductive arm, a pair of pivotally mounted contacts. said contacts being adiustable with respect to each other, insulating plates carried by said contacts, said contacts being movable for moving said insulating plates into engagement with said arms for breaking an electrical circuit.

3. In a circuit make and break mechanism, a thermostatically controlled arm, a pivotally supported arm,.a pair of rods adjustably connected to said 'pivotally sup-. ported arm, a pair of contacts pivotally carried by the outer ends of said rods, insulating plates secured to one side of said contacts, extensions formed for normally holding the ILIIJQOII said contacts in a position forelectrical engagement With said thermoa nected to said arm for pivotal movement upon the rise or fall of the arm, an electrical conductive arm *arried by said rod for synchronous movement therewith, a second pivotally supported arm, a pair of rods connected to the opposite ends of said last named arm for adjustable movement with respect to each other, a pair of contacts pivot-ally carried by the outer ends of said last named rods. said contacts being substantially U-shaped and having elongated extensions formed upon one side thereof for normally holding the contacts in a position for electrical engagement with said first mentioned arm, and insulating platescarried-by said contacts for engagement with said first mentioned arm upon pivotal movement of the contacts.

In testimony whereof I aftix my signature in presence ot'tivo witnesses.

JOHN F. POOR-E. 

